[_Extract from a lecture_ On Memory as a Key to the Phenomena of Heredity _delivered by Butler at the Working Men’s College, Great Ormond Street, on Saturday_, 2_nd_ _December_, 1882.]
WHY, let me ask, should a hen lay an egg which egg can become a chicken in about three weeks and a full-grown hen in less than a twelvemonth, while a clergyman and his wife lay no eggs but give birth to a baby which will take three-and-twenty years before it can become another clergyman? Why should not chickens be born and clergymen be laid and hatched? Or why, at any rate, should not the clergyman be born full grown and in Holy Orders, not to say already beneficed? The present arrangement is not convenient, it is not cheap, it is not free from danger, it is not only not perfect but is so much the reverse that we could hardly find words to express our sense of its awkwardness if we could look upon it with new eyes, or as the cuckoo perhaps observes it.
The explanation usually given is that it is a law of nature that children should be born as they are, but this is like the parched pea which St. Anthony set before the devil when he came to supper with him and of which the devil said that it was good as far as it went. We want more; we want to know with what familiar set of facts we are to connect the one in question which, though in our midst, at present dwells apart as a mysterious stranger of whose belongings, reason for coming amongst us, antecedents, and so forth, we believe ourselves to be ignorant, though we know him by sight and name and have a fair idea what sort of man he is to deal with.
We say it is a phenomenon of heredity that chickens should be laid as eggs in the first instance and clergymen born as babies, but, beyond the fact that we know heredity extremely well to look at and to do business with, we say that we know nothing about it. I have for some years maintained this to be a mistake and have urged, in company with Professor Hering, of Prague, and others, that the connection between memory and heredity is so close that there is no reason for regarding the two as generically different, though for convenience sake it may be well to specify them by different names. If I can persuade you that this is so, I believe I shall be able to make you understand why it is that chickens are hatched as eggs and clergymen born as babies.